Pump.



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PUMP- APPLICATION FILED MAR. 8, 195- 1,159,876. Patented Nov. 9, 1915.

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KARL D. SMITH, OF BATTLE GREEK, MICHIGAN, ASSIGNOR TO UNION STEAM PUMP COMPANY, OF BATTLE CREEK, MICHIGAN.

PUMP.

Application filed March 8, 1915.

To all whom it may concern:

Be it known that I, KARL D. SMITH, a citizen of the United States, residing at Battle Creek, Michigan, have invented certain new and useful Improvements in Pumps, of which the following is a specification.

This invention relates to improvements in pumps.

My improvements are especially designed by me for use in milk pumps and pumps for handling other liquids where it is necessary to clean frequently and keep in a sanitary condition, although desirable for use in other relations.

The main objects of this invention are: First, to provide an improved pump which is capable of being readily disassembled and one in which the parts are easily cleaned and kept in a sanitary condition. Second, to provide an improved pump of large capacity and one which is simple lIl'SlJIllOtllI'G and very durable. v

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification.

The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated in the accompanying drawing, forming a part of this specification, in wh ch:

-:Figure I is a vertical longitudinal section through the pump cylinder and ts sup porting frame of a pump embodying the features of my invention. Fig. II is a transverse section on a line corresponding to line 22 of Fig. I. Fig. III is a longitudinal section through the piston and mston valves on a line corresponding to line 3-3 of Fig. IV. FigIV is a transverse section through the piston on a line corresponding to the broken line H of Fig. III. Fig. V is a detail longitudinal sect on of the piston on a line corresponding to line 55 of Fig. I.

In the drawings, similar reference characters refer to similar parts throughout the several views, and the sectional views are taken looking'in the direction of the little arrows at the ends of the section lines.

Referring to the drawings, lrepresents the base or pedestalof a pump and 2 the Specification of Letters Patent.

Fatented Nov. e, 1915.

Serial m. 12,863.

cylinder supporting frame mounted thereon. The cylinder .3 is provided with removable heads 4 and 5, the head 4 being the outer head and removably secured to the cylinder by means of the bolts 6 and the winged nuts 7. The inner head 5 is adapted to fit against the side of the frame 2 and is provided with a projection 8 fitting an opening 9 in the frame and provided with a packing gland 10 for the piston rod 11.

The bolts 12 for the inner cylinder head are arranged through the frame 2 and pro vided with Winged nuts 13 so that the cylinder is removably supported on the frame and the cylinder head removably secured by these bolts. The cylinder 3 is provided with an inlet 1% and a discharge 15, the inlet and discharge being centrally located on opposite sides of the cylinder.

The piston comprises a central cross head portion'l6 and opposed longitudinally disposed side members 17 having segmental head members 18 at their ends, the head members being complemental to the cross head. This arrangement of parts provides opposed side recesses or chambers, one of which communicates with the cylinder inlet and constitutes an inlet chamber and the other of which communicates with the cylinder outlet and constitutes an outlet chamber and end chambers. These side members 17 are flat and are provided with ports 19 which connect both the inlet and the discharge chambers with both end chambers of the piston. The inner wall of the inlet chamber is provided with valve seats 20 on its inner side and with spaced pivot ears 21 adjacent the cross head 16, see Fig. V, The other side member 17 is provided with valve seats 20 on its outer side and with pivot ears 23 adjacent its end members 18.

The inlet clack valves 2d are mounted on pivots 25 on the earsQl, the valves being arranged in the end chambers of the piston. The outlet or discharge clack valves 26 are mounted on the ears 23 by pivots 25. The ends of the valves have stops 27. The stops of the inlet valves 24 engage the cross memher or head 16 while the stops of the outlet valves 26 engage the end members 18 limiting the opening movement of the valves. I

., With the parts thus arranged the cylinder can be. removed from the pump frame and 1 economical in structure and of large capa'o' its heads removed and the piston withdrawn, all the parts being accessible for cleaning and sterilizing. If desired, the valve pivots can be readily removed.

My improved pump is 'very simple and V which I contemplate as I believe the disclosure made will enable those skilled in the art to which my invention relates to embody or adapt the samei'as conditions may dietate. I desire, however, to be understood as claiming my improvements specificallyin the form illustrated as Well as broadly with-- in the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is: 1. In a pump, the combination of a frame, a cylinder having oppositely disposed inlet and discharge openings, said cylinder being provided with detachable heads, the securing bolts for the inner head being adapted to engage said frame whereby the cylinder is removably supported, a piston comprising a'central cross head and opposed longitudinally disposed side members having segmental'head members at their ends provid ing side and endchambers, one'side cham ber communicating with said inlet and the other with said discharge, said head members being complemental to said cross'head,

said side members having portstherein at each side of said cross head, the side memher on the inlet side of the cylinder having valve seats on its inner side and pivot ears 7 adjacent the cross head, the side member on the discharge side of the cylinder having valve seats on its outer side and pivot ears adjacent the head members thereof, and clack valves pivoted 'QII said ears.

2. In a pump, the combination of a piston comprising a central cross head and op posed longitudinally disposed side members having segmental head members at their ends providing side and end chambers, one side chamber communicating with said inlet and the other with said discharge, said head members being complemental to said'cross head, said side members having ports thereinatjeach side of said cross head, the side member on the inlet side of the cylinder having valve seats on its inner side and pivot ears adjacent the cross head, the side member on the discharge side of the cylin: der having valve seats on its outer side and pivot ears adjacent the head members there'- of, and clack valves pivoted on said ears. 3. In a pump, the combination of a frame, ac'ylinder having oppositelydisposed inlet and discharge openings, said cylinder being provided with detachable heads, the secur- V der is removably supported, a piston comprising a central cross head and opposed longitudinally disposed side members having segmental head members at their ends providing side and end chambers, one side chamber communicating wlth said side mile:

and the other with said discharge, said head members being complementalto said cross head, said side membe'rs'having ports there- 5 in at each side of said cross head, and clack valves for said ports,the valves for the ports of the side chamber communicating with the cylinder inlet being mounted in theend chambers, and the valves for the ports of the side chamber communicating with the cylinder discharge being in such chamber.

4. In a pump, the combination of a piston 7 comprising a central cross head and opposed longitudinally disposed side members hav ing segmental head members at their ends providing side and end chambers, one side chamber communicating with said inlet and the other with said discharge, said head members being complemental to said cross head, said sidemembers having ports therein at each side of saidicross head, and clack valves for said ports, the valves for the ports of the side'chamber communicating with the cylinder inlet being mounted in theend chambers, and the valves for-the ports, of the side chamber communicating with the cylinder discharge being in such chamber.

5. In a pump, the combination of a cylinder provided with oppositely disposed inlet and discharge, a piston recessed at each end and on opposed sides providing side and end chambers, one side chamber being open to the cylinder inlet and constituting an'inlet chamber and the other tothe cylinderdis' charge and constituting a discharge' chamber, the inner walls of the'side recesses'being the valves for the ports of the inletvchamber being disposedin said "end chambers fand the valves; for the ports of thedisch'arge chamber being disposed in such chamber.

. 6. In a pump, the-combination of a cylin-- der provided with oppositely j disposed inlet and discharge, a piston recessedateach end and'onopposed sides providing side and-end V chambers, one side "chamber being open to thec'ylinder inlet and constituting an inlet chamber and-the other to the cylinder dischargeand constituting a discharge chamber, the inner walls of the side-recesse's-hav- 1ng ports therein connecting'said 'inlet and discharge chambers'with both end chambers, and'valves for said ports. 5 7. Ina pump, the combinationofa'cyli'nder provided with oppositely disposed inlet and discharge, a piston having chambers at each end and an inlet chamber on one side open to the cylinder inlet and a discharge chamber on the opposite side open to the cylinder discharge, the inner walls of said inlet and discharge chambers being flat and having ports therein connecting both side chambers with both end chambers, and clack valves disposed in said end chambers controlling the ports of the inlet chamber and in the discharge chamber controlling the ports thereof.

8. In a pump, the combination of a cylinder provided with oppositely disposed inlet and discharge, a piston having chambers at each end and an inlet chamber on one side open to the cylinder inlet and a discharge and discharge chambers having ports therein connecting both side chambers with both end chambers, and valves for said ports.

9. In a pump, the combination of a cylinder provided with oppositely disposed inlet and discharge, a piston having inlet and discharge chambers in its sides communicating with said cylinder inlet and discharge respectively, the inner walls of said chambers having pairs of ports therein, there being a cross wall between said pairs of ports, and valves for said ports.

In witness whereof, I have hereunto set my hand and seal in the presence of two witnesses.

E. M. SMITH, E. Rnnvns.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Iatents, Washington, D. C. 

